mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
![S. Lockwood-Childs](/assets/img/avatar_default.png)
Commit fb9edbe984
shortened held_lock->check from a 2-bit field
to a 1-bit field.
Make liblockdep compatible with the new definition by passing check=1
to lock_acquire() calls, rather than the old value check=2 (which
inadvertently disabled checks by overflowing to 0).
Without this fix, several of the test cases in liblockdep run_tests.sh
were failing.
Signed-off-by: S. Lockwood-Childs <sjl@vctlabs.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
70 lines
2 KiB
C
70 lines
2 KiB
C
#ifndef _LIBLOCKDEP_MUTEX_H
|
|
#define _LIBLOCKDEP_MUTEX_H
|
|
|
|
#include <pthread.h>
|
|
#include "common.h"
|
|
|
|
struct liblockdep_pthread_mutex {
|
|
pthread_mutex_t mutex;
|
|
struct lockdep_map dep_map;
|
|
};
|
|
|
|
typedef struct liblockdep_pthread_mutex liblockdep_pthread_mutex_t;
|
|
|
|
#define LIBLOCKDEP_PTHREAD_MUTEX_INITIALIZER(mtx) \
|
|
(const struct liblockdep_pthread_mutex) { \
|
|
.mutex = PTHREAD_MUTEX_INITIALIZER, \
|
|
.dep_map = STATIC_LOCKDEP_MAP_INIT(#mtx, &((&(mtx))->dep_map)), \
|
|
}
|
|
|
|
static inline int __mutex_init(liblockdep_pthread_mutex_t *lock,
|
|
const char *name,
|
|
struct lock_class_key *key,
|
|
const pthread_mutexattr_t *__mutexattr)
|
|
{
|
|
lockdep_init_map(&lock->dep_map, name, key, 0);
|
|
return pthread_mutex_init(&lock->mutex, __mutexattr);
|
|
}
|
|
|
|
#define liblockdep_pthread_mutex_init(mutex, mutexattr) \
|
|
({ \
|
|
static struct lock_class_key __key; \
|
|
\
|
|
__mutex_init((mutex), #mutex, &__key, (mutexattr)); \
|
|
})
|
|
|
|
static inline int liblockdep_pthread_mutex_lock(liblockdep_pthread_mutex_t *lock)
|
|
{
|
|
lock_acquire(&lock->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_);
|
|
return pthread_mutex_lock(&lock->mutex);
|
|
}
|
|
|
|
static inline int liblockdep_pthread_mutex_unlock(liblockdep_pthread_mutex_t *lock)
|
|
{
|
|
lock_release(&lock->dep_map, 0, (unsigned long)_RET_IP_);
|
|
return pthread_mutex_unlock(&lock->mutex);
|
|
}
|
|
|
|
static inline int liblockdep_pthread_mutex_trylock(liblockdep_pthread_mutex_t *lock)
|
|
{
|
|
lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_);
|
|
return pthread_mutex_trylock(&lock->mutex) == 0 ? 1 : 0;
|
|
}
|
|
|
|
static inline int liblockdep_pthread_mutex_destroy(liblockdep_pthread_mutex_t *lock)
|
|
{
|
|
return pthread_mutex_destroy(&lock->mutex);
|
|
}
|
|
|
|
#ifdef __USE_LIBLOCKDEP
|
|
|
|
#define pthread_mutex_t liblockdep_pthread_mutex_t
|
|
#define pthread_mutex_init liblockdep_pthread_mutex_init
|
|
#define pthread_mutex_lock liblockdep_pthread_mutex_lock
|
|
#define pthread_mutex_unlock liblockdep_pthread_mutex_unlock
|
|
#define pthread_mutex_trylock liblockdep_pthread_mutex_trylock
|
|
#define pthread_mutex_destroy liblockdep_pthread_mutex_destroy
|
|
|
|
#endif
|
|
|
|
#endif
|